摘要
该文提出了一种基于多端暂态电流小波变换的高压输电线路的保护算法。在对高压输电线路及母线对高频暂态电流衰减作用分析的基础上,得出了利用暂态电流实现保护的方法,并提出了综合利用多端暂态电流信息的保护算法,以及相应的保护定值设定依据,使保护动作更加可靠,可保护线路的全长,且整定方便。EMTP仿真结果证明此算法对不同的故障情况以及线路接线方式均可正确判断。
Based on the wavelet transform of multi-end transient currents, a novel protection algorithm for High Voltage transmission line is presented. By analyzing the attenuation effects of High Voltage transmission line and busbar capacitance to high-frequency current signals, method using multi-end transient currents to achieve protection and the protection setting principles are given. The operation of the protection, which is easy to set and can protect the whole transmission line, is more rapid and reliable, Simulation results of EMTP prove that the protection algorithm can judge properly under different fault conditions and different transmission line connect styles.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2004年第2期39-42,共4页
Proceedings of the CSEE
关键词
高压输电线路
线路保护算法
暂态电流
小波变换
暂态保护
Powwer system
High voltage transmission line
Transient protection
Wavelet transform
Multi-end protection
Transient currents
